Amazon.com: StarTech.com USB 2.0 Fax Modem - 56K External Hardware Dial Up V.92 Modem/ Dongle/Adapter - Computer/Laptop Fax Modem - USB to Telephone Jack - USB Data Modem - Network Fax/CMR/POS (USB56KEMH2) :
IBM Data Fax Modem 33 Kbps 56 Kbps with Xjack Connector US Robottics x2 PCMCIA | eBay